@article{lee2015free,
  title={Free vibration analysis of a circular cylindrical shell using the Rayleigh--Ritz method and comparison of different shell theories},
  author={Lee, HyunWook and Kwak, Moon K},
  journal={Journal of Sound and Vibration},
  volume={353},
  pages={344--377},
  year={2015},
  publisher={Elsevier}
}